Loudspeaker



FIG. 1 shows a front elevational view of the loudspeaker showing our new design; and,

FIG. 2 shows a right side elevational view thereof, with the left side and the top and bottom of the design being identical to the right side elevational view of FIG. 2.

The broken lines shown on FIG. 2 are for illustrative purposes only, and form no part of the claimed design. 

The ornamental design for a loudspeaker, as shown and described. 